Knoppix Problem

[mark]

Hi...

I have burned ISO of Knoppix from Digit DVD. I ran it once on my System and ran OK. Now, whenever I try to boot from CD the PC hangs while loading...WHat might be the problem?

regds Mark

[GNUrag]

Reasons:
1) Bad CD / Cheap CD (with blue dye) / Scratched CD

2) CD burnt at very high speed( >= 32X) . Always burn OS disks in lowest possible speed ... like say 4X... its nothing like CD wont run if written at high speed , but its a common problem that such CDs stop responding after a few weeks...

There's nothing wrong with hardware since the CD worked the first time...